Charles Czeisler is chair of the Division of Sleep and Circadian Disorders at Brigham & Women’s Hospital and director of the Division of Sleep Medicine at Harvard Medical School in Boston, Massachusetts.
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11:56
Tablets and Smartphones Might Be Sapping Your Sleep
Researchers say using tablets and smartphones before bedtime can shift your circadian rhythms.
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16:43
Simulating the Red Planet, on the Pale Blue Dot
What’s it like to live—and cook—on Mars? To find out, researchers are simulating Mars missions in Russia and on the slopes of a Hawaiian volcano.